Finding the Fourth Proportional to 2,080.67, 3,120.14 and 1,039.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.67 : 3,120.14 = 1,039.43 : x
2. Step 2: Convert to fraction form
   2,080.67/3,120.14 = 1,039.43/x
3. Step 3: Cross multiply
   2,080.67x = 3,120.14 × 1,039.43
4. Step 4: Simplify right side
   2,080.67x = 3,243,167.12
5. Step 5: Solve for x
   x = 3,243,167.12/2,080.67
6. Step 6: Final answer
   x = 1,558.71